leif 6

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Across
  1. 4. connects, exchanges
  2. 6. disease causing agent
  3. 8. inner layer
  4. 10. to the heart
  5. 11. keeps skin moist
  6. 13. cools body
  7. 15. destroys virus
  8. 16. destroy pathogen
  9. 17. fight infection
  10. 18. spot pathogen
  11. 19. marking of a pathogen
Down
  1. 1. weak or dead strand of virus injected into blood
  2. 2. cause scabs
  3. 3. away from heart
  4. 5. redness, swelling and heat
  5. 7. outer layer
  6. 9. carries o2
  7. 12. skin,hair, nails
  8. 14. destroys bacteria